Question : RUBP + O_(2) overset(RUBSICO)to "Phosphoglycolate" + PGA . Theaboveequation representthe firststepof a cyclicpathways occuringin plantscells . (a)Namethe pathways. (b) Wheredoesthis pathwaysoccursinsidethe cell ? (c)How many carbon molecules are seen in RUBP & PGA. (d) Statethe roleof RUBISCOin this step . (e)Underwhichcondition doesthis pathway proceed.

Question : RUBP + O_(2) overset(RUBSICO)to "Phosphoglycolate" + PGA .

1.	Question : RUBP + O_(2) overset(RUBSICO)to "Phosphoglycolate" + PGA . Theaboveequation representthe firststepof a cyclicpathways occuringin plantscells . (a)Namethe pathways. (b) Wheredoesthis pathwaysoccursinsidethe cell ? (c)How many carbon molecules are seen in RUBP & PGA. (d) Statethe roleof RUBISCOin this step . (e)Underwhichcondition doesthis pathway proceed.
Answer» Solution :(a) Photorespirationor `C_(2)`CYCLE. (b) `C_(2)`cycletakes PLACE in chloroplast ,peroxisomeand mitochondriom. (c) RUBP is a 5C COMPOUND and PGA is a 3C compoud . (d) RUBISCO playsthe roleof oxygenaseenzyme . (e) `C_(2)`cycleoccurs in photosyntheticcells due to abssenceof `CO_(2)`and INCREASED `O_(2)`.